Maybe consider next time, instead of a pattern around the cup like this, you focus tightly close to the cup at the bottom and expand your circle as you go up? Or maybe just light the inside of the rim and the back of it? To give it a supernatural look.
That's what I tried. I tried making steam too but the more I tried to co.trol it the more choppy it got.these are spirals, I have another one ill post that Ph might enjoy better. It just doesn't go all the way down.